#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
int main()
{
	while (1)
	{
		if (getchar() >= 65 && getchar() <= 90)
		{
			printf("YES");
			break;
		}
		else if (getchar() >= 97 && getchar() <= 122)
		{
			printf("YES");
			break;
		}
		else
		{
			printf("NO");
			break;
		}
	}
	return 0;
}
#include <stdio.h>
int main()
{
	int year = 0, month = 0;
	scanf("%4d%2d", &year, &month);
	if (month >= 3 && month <= 5)
	{
		printf("spring");
	}
	else if (month >= 6 && month <= 8)
	{
		printf("summer");
	}
	else if (month >= 9 && month <= 11)
	{
		printf("autumn");
	}
	else
	{
		printf("winter");
	}
	return 0;
}
#include <stdio.h>
int main()
{
	int weight = 0;
	float height = 0.0f;
	scanf("%d %f", &weight, &height);
	float bmi = weight / height / height;
	if (bmi > 18.5&&bmi < 23.9)
	{
		printf("Normal");
	}
	else
	{
		printf("Abnormal");
	}
	return 0;
}
#include <stdio.h>
int Max(int n1, int n2, int n3, int n4)
{
	if (n1 >= n2 && n1 >= n3 && n1 >= n4)
		return n1;
	else if (n2 >= n1 && n2 >= n3 && n2 >= n4)
		return n2;
	else if (n3 >= n1 && n3 >= n2 && n3 >= n4)
		return n3;
	else
		return n4;

}
int main()
{
	int a = 0, b = 0, c = 0, d = 0;
	scanf("%d %d %d %d", &a, &b, &c, &d);
	int k = Max(a, b, c, d);
	printf("%d", k);
	return 0;
}